/**
 * Copyright (c) <2010>, <SUNNY GUPTA>
 * All rights reserved.

 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of the <ORGANIZATION> nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <SUNNY GUPTA> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.gwtp.investmentadvisor.client;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.gwtp.investmentadvisor.client.di.InvestmentAdvisorGinjector;
import com.gwtp.investmentadvisor.client.place.PlaceNameTokens;
import com.gwtp.investmentadvisor.shared.entities.CurrentUser;
import com.gwtp.investmentadvisor.shared.entities.CurrentUser.ServerCallback;
import com.gwtp.investmentadvisor.shared.event.LoginSuccessfulEvent;
import com.gwtp.investmentadvisor.shared.event.LoginSuccessfulEventHandler;
import com.gwtplatform.mvp.client.DelayedBindRegistry;
import com.gwtplatform.mvp.client.EventBus;
import com.gwtplatform.mvp.client.proxy.PlaceManager;
import com.gwtplatform.mvp.client.proxy.PlaceRequest;

/**
 * Entry point classes define <code>onModuleLoad()</code>.
 */
public class InvestmentAdvisorGWTP implements EntryPoint {
  
  // Create Injector
  public final InvestmentAdvisorGinjector ginjector = GWT.create(InvestmentAdvisorGinjector.class);
  
  /**
   * This is the entry point method.
   */
  public void onModuleLoad() {
    // Bind ginjector for delayed registry
    DelayedBindRegistry.bind(ginjector);
        
    // Bind application wide events' handlers
    bindHandlers();
    
    // Validate current user and then fire current place
    ginjector.getCurrentUser().validateFromServer(new ServerCallback() {
      
      @Override
      public void onComplete(CurrentUser currentUser) {
        // Fire current place now to ensure that Current User has been validated at least once
        ginjector.getPlaceManager().revealCurrentPlace();
      }
    });
  }

  private void bindHandlers() {
    // Obtain eventBus
    EventBus eventBus = ginjector.getEventBus();
    
    // LoginSuccessfulEvent
    eventBus.addHandler(LoginSuccessfulEvent.TYPE, new LoginSuccessfulEventHandler() {

      @Override
      public void onLoginSuccessfulEventComplete(
          LoginSuccessfulEvent event) {
        PlaceManager placeManager = ginjector.getPlaceManager();
        // Get previous history token, if any
        String redirectHistoryToken = event.getRedirectHistoryToken();
        if (redirectHistoryToken != null) {
          placeManager.revealPlaceHierarchy(
              ginjector.getTokenFormatter().toPlaceRequestHierarchy(redirectHistoryToken));
        } else {
          // No previous place, show dashboard
          placeManager.revealPlace(new PlaceRequest(PlaceNameTokens.UserDashboardNameToken));
        }
      }
    });
  }
}
